Watts pwfpk4kc4 Ro Annual Replacement Filter Pack 4 Pack

Product Description

The WATTS pwfpk4kc4 is a four-stage annual replacement filter pack designed for Kwik-Change reverse osmosis systems. The pack includes four components: a red-label sediment filter, a yellow-label carbon block filter, a 60-gallon-per-day reverse osmosis membrane, and a blue-label granular activated carbon (GAC) post-filter. Together, these stages target sediment, chlorine, odors, and a broad spectrum of dissolved contaminants. The sediment filter is rated for replacement every 6 months or every 1,350 gallons. The semi-permeable RO membrane reduces total dissolved solids and a wide range of chemical and biological contaminants down to 1/10,000 of a micron. Installation is handled by licensed plumbers or water treatment professionals.

This filter pack is suited for residential reverse osmosis applications where annual maintenance is required. The Kwik-Change format is designed to simplify cartridge replacement, reducing service time compared to standard sump-style housings. The pack covers all four filtration stages in a single order, making it practical for scheduled preventive maintenance calls. The carbon block stage addresses chlorine taste and odor, while the post-carbon GAC stage provides final polishing before the water reaches the distribution point.

Key Features

• Four-stage annual pack covers sediment prefiltration, carbon block, RO membrane, and GAC post-filtration in one kit
• Sediment filter rated for 6-month or 1,350-gallon service intervals
• 60-gallon-per-day RO membrane capacity
• Reduces total dissolved solids, lead, arsenic, fluoride, perchlorate, chromium, copper, barium, cadmium, nitrates, radium 226/228, turbidity, and protozoan cysts including giardia and cryptosporidium
• Carbon block stage reduces chlorine and objectionable tastes and odors
• Lead-free construction

Compatibility

Designed as an OEM-style annual replacement pack for Kwik-Change four-stage reverse osmosis systems.

Installation Notes

Filter pack replacement should be performed by a licensed plumber or qualified water treatment technician. Shut off the feed water supply and depressurize the system before removing any filter cartridges. Follow the manufacturer-specified replacement intervals to maintain system performance and contaminant reduction claims. Dispose of spent cartridges in accordance with local regulations.